Associate Technical Lead - .NET at Gapstars | Colombo, Sri Lanka

About GapstarsGapstars collaborates with some of Europe’s most innovative tech firms, from disruptive startups to rapidly growing scaleups, assisting them in assembling high-performing remote engineering teams.With our headquarters in the Netherlands and talent hubs in Sri Lanka and Portugal, we boast a vibrant community of 275+ engineers dedicated to tackli…

About GapstarsGapstars, a premier software development services provider located in the Netherlands, specializes in creating remote, agile teams in Sri Lanka and Portugal for pioneering technology firms. With over 300 talented TechStars and innovative professionals, we transform scalable software into high-performance products that drive the future. Our partners include ambitious tech companies eager to dominate their markets.About the RoleWe are seeking a Front-End Developer who will be instrumental in crafting modern, efficient, and sustainable web application interfaces. This role demands extensive collaboration with React, TypeScript, and Tailwind CSS to build scalable UI components and functionalities. A keen focus on user experience, client-side performance enhancement, and seamless backend integration is essential.Key ResponsibilitiesDesign and implement responsive, reusable UI components using React, TypeScript, and Tailwind CSSDevelop effective data fetching methodologies utilizing TanStack QueryOversee client-side state management employing ZustandEnhance client-side performance and optimize page load timesCollaborate closely with back-end engineers, designers, and product managersGuarantee UI accessibility, responsiveness, and cross-browser compatibilityProduce clean, maintainable code that adheres to modern front-end best practicesEngage in code reviews and contribute to the architectural decisions of the front-end

Join our dynamic team as a Development Lead in Software Engineering and play a pivotal role in shaping the future of our software solutions.As a Development Lead, you will oversee the technical direction of our projects, ensuring high-quality software delivery while mentoring a talented team of engineers. Your expertise will guide the development process and foster a collaborative environment.

Join PetDesk as a Technical Lead - Database Administrator, where you will be a pivotal part of a dynamic engineering organization. In this role, you will work closely with various teams, taking ownership of your applications while the DBA function offers shared operational expertise, performance guidance, and platform stewardship.You will collaborate intimately with DevOps and engineering teams to ensure database reliability, observability, and adherence to best operational practices. As a subject matter expert, your hands-on approach will directly influence the performance and health of our database platforms.In this flat organizational structure, you will have the autonomy to identify problems, diagnose root causes, and implement end-to-end improvements without cumbersome handoffs. Your focus will be on maintaining optimal database performance, security, and scalability while engaging early in the design and development processes to advise on data modeling and database usage. Our environment primarily operates on AWS RDS, with significant SQL Server and an expanding PostgreSQL workload. Your day-to-day responsibilities will include performance analysis, query optimization, and operational troubleshooting, with a strong emphasis on proactive enhancements.

Role OverviewWe are seeking a Senior Technical Lead to spearhead the engineering delivery and define the technical vision for our innovative product/platform. You will be responsible for making architectural decisions, mentoring a team of engineers, ensuring quality releases, and collaborating closely with Product Management, Quality Assurance, and DevOps teams to create scalable, secure, and maintainable solutions.

About GapstarsGapstars collaborates with Europe's most innovative tech companies, ranging from disruptive startups to rapidly growing scaleups, to create high-performing remote engineering teams.With our headquarters in the Netherlands and talent hubs located in Sri Lanka and Portugal, we are proud to employ over 275 engineers dedicated to addressing real-world challenges through cutting-edge technologies. Our teams excel in various domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that yield impactful results.If you are seeking an organization that values technical excellence, fosters a strong culture, and provides ample opportunities for growth, welcome to Gapstars.About the RoleAre you a highly proficient Full Stack Engineer excited about developing innovative AI-driven applications within the healthcare sector? Do you excel in an environment that pushes you to create scalable and high-performance software solutions? If this resonates with you, we invite you to apply!In this role, you will be instrumental in building and maintaining our AI-powered platforms, ensuring seamless integration between front-end and back-end services. You will collaborate closely with engineers, designers, and product teams to deliver groundbreaking solutions that enhance our healthcare applications.Develop and maintain front-end applications utilizing modern JavaScript frameworks such as React, Vue, or Angular.Design, implement, and optimize scalable backend services using Python frameworks like FastAPI, Flask, or Django.Create and integrate RESTful APIs to support AI-driven applications.Optimize databases for performance and scalability using SQL.Implement and manage CI/CD pipelines to streamline software deployment.Troubleshoot and debug issues across the stack, ensuring high system reliability.Engage in code reviews and promote best coding practices.Work collaboratively with cross-functional teams to translate business requirements into technical solutions.

About GapstarsAt Gapstars, we collaborate with Europe’s most ambitious tech companies, from groundbreaking startups to rapidly scaling enterprises, to help them build exceptional remote engineering teams.With our headquarters in the Netherlands and talent hubs in Sri Lanka and Portugal, we boast a diverse team of over 300 engineers dedicated to tackling real-world challenges with cutting-edge technologies. Our projects span various domains, including networking, marketplaces, SaaS, and AI, delivering scalable solutions that generate impactful results.If you seek a workplace that champions technical excellence, fosters a strong culture, and offers ample opportunities for growth, you will find your place at Gapstars.Role Overview The Learning & Development Lead will design and manage a modern, scalable ecosystem that enhances Gapstars’ “people product” and directly contributes to client success. This position will revolutionize training into a systematic “Operating System,” establishing defined role-based pathways, comprehensive manager support, and measurable performance metrics. The ultimate goal is to create a high-impact, low-administration model that strengthens our community's capabilities and empowers our leaders while providing tangible evidence of skills that facilitate our commercial growth.Key Responsibilities1. Academy Design & Learning PathwaysDevelop and implement the "Gapstars Academy" with a reliable quarterly schedule for employees and leaders.Create standardized, role-specific learning pathways for key groups (Team Leads, Community Specialists, Engineers) while remaining adaptable to specific client or project needs.Design structured learning journeys that encompass the entire employee lifecycle: from onboarding to performance support and future career development.2. Leadership Development & Manager SupportCreate and implement practical toolkits and learning initiatives focused on essential leadership skills: providing feedback, detecting burnout, and navigating difficult conversations.Facilitate effective coaching and mentoring strategies to elevate leadership capabilities across the organization.

Join Petvisor's dynamic engineering team as a Senior Software Engineer. In this pivotal role, you will spearhead the development of innovative integrations and platform products while also ensuring routine maintenance aligns with the strategic direction set by our senior leadership. Your primary focus will be on leveraging your extensive expertise in Python to create scalable software solutions. We seek a passionate engineer who embraces technical diversity rather than confining themselves to a single technology stack. In addition to your Python skills, familiarity with .NET and C# is advantageous as you’ll play a crucial role in our varied ecosystem. Your proficiency with AWS services such as Lambda, Kinesis, SQS, and DynamoDB, alongside a solid understanding of database technologies like PostgreSQL and MSSQL, will empower you to work across the full technology stack effectively. This role lays a strong foundation for your career progression into senior and leadership positions.

Gapstars, based in the Netherlands, delivers software development services and builds remote teams in Sri Lanka and Portugal. The company supports tech businesses with technology solutions aimed at growth. Over 300 professionals at Gapstars help partners turn scalable software into reliable, high-performance products. Role overview The Senior Quality Assurance Lead guides quality and security practices within the product team. This role shapes and maintains the quality framework, focusing on improving release stability and embedding quality assurance throughout the development cycle. What you will do Lead quality and security initiatives within the product team Develop and maintain the team's quality framework Work to improve release stability and reduce production issues Collaborate closely with engineering and product teams Balance hands-on testing with strategic leadership Support continuous improvement in testing approaches and team practices

About GapstarsGapstars is a dynamic software development service provider based in the Netherlands, renowned for assembling agile remote teams across Sri Lanka and Portugal. Our talented collective of over 300 TechStars is dedicated to transforming scalable software into high-performance products that define the future. We proudly partner with ambitious tech companies eager to dominate their markets.The RoleWe are seeking an experienced Senior/Lead Full Stack Software Developer to join our client's tech and product team. In this pivotal role, you will be responsible for crafting clean, efficient, and scalable code while also mentoring team members, influencing vital architectural decisions, aiding the tech lead in hiring processes, and collaborating with external partners and suppliers. Most crucially, you will be instrumental in developing and enhancing a transformative mental health platform.Our technology stack includes: .NET 8, SQL Server, React, and Azure.

About GapstarsGapstars is a leading software development services provider headquartered in the Netherlands, specializing in creating innovative, agile remote teams in Sri Lanka and Portugal. Our mission is to empower ambitious tech companies with top talent, transforming scalable software into high-performance products that are set to redefine the industry landscape.About the RoleAs a Full Stack Developer, you will play a pivotal role in enhancing our internal tools and applications. Your primary focus will be to elevate user experience while ensuring we consistently deliver impactful results. Our commitment to leveraging cutting-edge technology enables us to continually iterate and enhance features, aiming for nothing short of excellence.Key Responsibilities1. Development & MaintenanceDesign, develop, and maintain internal tools and applications, including web scraping systems.Create scalable solutions for data collection and processing from diverse sources.Engage throughout the product lifecycle: from design and development to testing and deployment.2. Production Reliability & Incident ManagementProactively investigate and resolve complex production issues from start to finish.Debug across backend systems, databases, infrastructure, and integrations.Address problems directly in the codebase, ensuring sustainable solutions.Enhance monitoring, logging, and observability for better performance.3. System Enhancements at ScaleIdentify and address performance bottlenecks and scalability challenges.Optimize APIs, queries, and workflows for improved efficiency.Enhance automation systems, including email, integrations, and scraping tools.Minimize technical debt through structural improvements.

Role overview Speechify seeks a Tech Lead to join the Android Core Product team in Colombo, Sri Lanka. This position steers Android development and plays a key part in shaping the future of Speechify’s mobile apps. What you will do Lead Android projects through all stages, from initial concept to final release Collaborate with engineers, designers, and product managers to deliver features that enhance the user experience Make technical decisions and establish best practices for the Android team Promote teamwork across different groups to achieve product objectives

Join our dynamic R&D team as a Senior Lead Software Engineer (.NET, C#) at Acumatica! In this pivotal role, you will collaborate with a talented team of developers to design, create, and maintain large-scale, cloud-based ERP, CRM, and web applications utilizing Microsoft technologies such as .NET, C#, and MS SQL Server for businesses across the globe.Engage in the architecture, development, and customization of business applications.Create robust data access layers, business objects, and presentation layers.Innovate and develop modular enterprise-grade software solutions.Provide support for legacy code, focusing on optimization and refactoring.Conduct thorough code analysis to identify and resolve functionality errors.Collaborate with development partners on architecture and code review processes.Mentor and guide developers within Acumatica’s development network while promoting the Acumatica ERP framework.

Join our dynamic team at WNS Global Services as a Lead Associate in Operations! In this pivotal role, you will oversee operational processes, implement strategies to enhance efficiency, and contribute to our commitment to excellence.

Join Gapstars as a Lead Accounts Payable SpecialistAt Gapstars, we pride ourselves on being a premier software development services provider based in the Netherlands, with dynamic remote teams in Sri Lanka and Portugal. Our team of over 300 innovative tech professionals is committed to delivering scalable software solutions that drive performance and define the future of technology. We partner with ambitious tech companies eager to make their mark in the industry.Role OverviewThis position transcends traditional purchase ledger management; it focuses on rethinking transactional finance operations throughout the procure-to-pay cycle. As the Lead Accounts Payable Specialist, you will spearhead the transformation of Purchase Ledger operations, evolving back-office functions into strategic, customer-centric services that enhance business insights and operational excellence.Your main objectives will include documenting, analyzing, and continuously improving all purchase ledger processes, emphasizing automation, enhancing internal customer satisfaction, and ensuring data integrity. This role demands a strategic mindset combined with a hands-on approach to operational intricacies, as you will build and lead a high-performing team to consolidate purchase ledger operations across multiple group entities into cohesive, efficient processes.

Join our dynamic team at Dijital Team Pty Ltd as a Tech Lead for HubSpot Implementation. In this role, you will spearhead the technical aspects of implementing HubSpot solutions for our diverse client base, ensuring that they receive the highest level of service and integration.

The RoleWe are seeking a talented and experienced Technical Customer Support Engineer with a solid software background who is passionate about addressing intricate challenges for our enterprise clients. As the first line of technical support for Idhammar’s suite of products, you will be responsible for triaging, troubleshooting, and resolving issues across various layers including applications, databases, integrations, networking, and cloud infrastructure.Key ResponsibilitiesManage customer cases from the moment they are received until resolution, utilizing Jira Service Management (or a similar tool) to consistently meet and surpass Service Level Agreements (SLAs).Diagnose and troubleshoot application, integration, and network-related issues across web, mobile, and API services; reproduce defects, identify root causes, and provide solutions or high-quality escalations.Conduct in-depth database investigations with SQL Server/PostgreSQL, analyzing slow queries, locks, deadlocks, and index usage while crafting optimized SQL queries to resolve performance issues.Support and maintain multi-cloud environments (Azure, AWS, IONOS Cloud), reviewing logs and metrics, scaling resources, and managing compute, storage, and networking aspects.Oversee identity and access management (IAM/Entra ID roles & policies), certificates, and secrets.Coordinate patching and maintenance windows effectively.Diagnose and resolve networking and connectivity issues across TCP/IP, DNS, VPN, TLS/SSL, and HTTP/HTTPS, as well as firewall and security group configurations.Resolve connectivity and data integration problems involving ERP, SCADA, IoT, OPC UA, REST/gRPC, and file-based ETL in collaboration with vendors and customer IT teams.Perform proactive health checks, patching, and minor hotfix deployments, while contributing to playbooks and runbooks.Communicate effectively with both technical and non-technical stakeholders, providing updates on incidents and delivering post-incident reports.Create and enhance knowledge base articles, customer guides, and internal troubleshooting documentation.Collaborate with Product and Engineering teams on bug triage, feature feedback, and reliability enhancements.Typical Challenges You Will EncounterAddressing query timeouts and blocking chains; designing and adjusting indexes and query plans.Resolving data ingestion failures (CSV/ETL/API), schema changes, and referential integrity issues.Tackling API authentication/authorization issues (OAuth2/OIDC), including certificate or token expirations.Handling application performance regressions after upgrades; conducting log analysis and implementing rollbacks or mitigations as necessary.Performing network troubleshooting for packet loss, TLS handshake errors, DNS resolution failures, and VPN/firewall misconfigurations.Managing cloud environment alarms (CPU/IO, storage thresholds, scaling, networking) and addressing unexpected cost spikes.

About GapstarsGapstars is an innovative software development service provider based in the Netherlands. We specialize in creating remote, agile teams in Sri Lanka and Portugal, partnering with ambitious tech companies to help them conquer their markets. With a talented workforce of over 300 TechStars, we focus on transforming scalable software into high-performance products that shape the future of technology.About the RoleWe are on the lookout for a pragmatic AI Engineer to bridge robust software engineering practices with the dynamic field of applied AI. In this role, you will design, build, and evaluate AI systems that are not only reliable and measurable but also genuinely useful beyond mere demonstrations.You will collaborate closely with data scientists, software engineers, and product managers to deliver impactful AI solutions. Your approach prioritizes evaluation over hype, automation for efficiency, and simplicity for high performance in production, particularly within the life sciences sector.ResponsibilitiesDevelop and deploy AI-driven applications from prototypes to production using cutting-edge LLM frameworks and APIs.Design evaluations and metrics that accurately measure real-world performance, including accuracy, latency, user experience quality, and safety.Construct and enhance Retrieval-Augmented Generation (RAG) pipelines that integrate vector databases with LLMs.Implement data pipelines, retraining workflows, and monitoring tools to maintain the currency and performance of AI models.Develop and execute context engineering strategies to enhance output quality and mitigate hallucination risks.Work alongside product, platform, and infrastructure teams to comprehend business requirements and develop scalable, resilient systems.Apply pragmatic agentic AI patterns, such as tool use, planning, and reflection loops, selecting the appropriate complexity for each application.Promote best engineering practices, including code reviews, testing, observability, CI/CD, and reproducibility.Ensure that AI solutions adhere to security, compliance, and explainability standards.

About GapstarsGapstars collaborates with Europe’s most innovative tech companies, from groundbreaking startups to rapidly scaling enterprises, to build efficient remote engineering teams. With our headquarters in the Netherlands and talent hubs in Sri Lanka and Portugal, we boast a team of over 275 engineers dedicated to tackling real-world problems through cutting-edge technologies. Our diverse teams operate across various domains, including networking, marketplaces, SaaS, and AI, creating scalable solutions that yield impactful results. If you're seeking a workplace that values technical excellence, a vibrant culture, and opportunities for growth, we invite you to join Gapstars.Role OverviewWe are in search of a proactive Microsoft AI Lead to architect our enterprise agents and promote AI accessibility across the organization. In this role, you will serve as a crucial link between advanced engineering and business facilitation. A key aspect of your responsibilities will involve mentoring and advocating for non-technical business teams, guiding them in the safe development of their personalized Copilots and automations.At Gapstars, we embrace T-shaped engineers: while you will oversee the Microsoft AI ecosystem (including Copilot, Azure, and Power Platform), your work will be collaborative, engaging closely with our AWS/n8n Lead, and occasionally diving into AWS tasks while they support you in Azure.Key ResponsibilitiesBusiness Enablement (Citizen AI): Empower and guide business units to create their own Copilots and workflows through workshops, documentation, and acting as the internal advocate for AI adoption.Agent Architecture & Governance: Establish enterprise guardrails (Entra ID, Purview, Citizen Toolkit) to ensure safe building practices for business users, and implement complex multi-agent systems when business requirements exceed low-code capabilities.Pro-Code AI & RAG: Develop custom models, backend logic, and RAG pipelines utilizing Azure AI Foundry and Azure AI Search to support both engineering and business-led Copilots.Cross-Cloud Collaboration: Work closely with the AWS Lead, sharing expertise on Microsoft integrations (Graph API, Entra ID) and engaging with n8n or Amazon Bedrock to align with the broader team objectives.

The LinkedIn Brand & Lead Growth Specialist will collaborate closely with the CEO to elevate Homey’s brand presence and implement effective outbound growth strategies. This is a dedicated in-house role focused on transforming LinkedIn into a primary lead generation platform for our operations in the UK.Key ResponsibilitiesDevelop and schedule impactful weekly posts centered on UK property trends and conveyancing insights.Conduct outbound prospecting to engage UK Estate Agents and Mortgage Brokers.Oversee the CEO’s LinkedIn direct messages, nurturing warm leads and coordinating meetings on his behalf.Create engaging content optimized for LinkedIn, including graphics and concise copy.Produce “Life at Homey” content to highlight our vibrant office culture in Sri Lanka and attract exceptional talent.Deliver monthly reports on reach, engagement metrics, and the quality of leads generated.